Pressure-regulating valve.



PATENTBD AUG. 25, 1903.

c. BAS'TIAN. PRESSURE REGULATING VALVE.

APPLICATION FILED MAY 16, 1902.

1T0 MODEL.

I I cw9rr oeg ZKMW, 06. 0

To all whom it may concern: w

Be it known that 1, CHARLES L. B sTIAN,

Patented August 25, 1903.

PATENT OFFI -'1 CHARLES BASTIAN, OF CHICAGO, 'ILLINoIs.

PRESSURE-REGULATING VALV'E.

SPECIFICATION forming part of Letters'Patent No. 737,057, dated August 25, 1903. r I I Application filed M9416, 1902. 'Serial No. 107,618. (No model.)

I a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pressure-Regulating Valves,

1 of which the following is a specification.

My present invention relates to improvements on the pressure-regulating valvefor which Letters Patent No. 669,194were granted to me'on March 5, 1901; and-its primary objeet is to improve and perfect the construction of a valve of this character so as to produce a greater flow of gas at low or high pressure.

Further objects of the invention areto provide a top-and bottom guide for. the valve to insure its proper operation, to prevent the escape of gas from the nozzle-chamber to the diaphram-chamber, to limit'the movement of the valve and provide a loose connection between the valve and the diaphragm, so as to overcome inaccuracies of fit of theparts and prevent binding thereof and avoid injury to the diaphragm.

The invention has other objects in view which will appear hereinafter in the detailed description. I

In the accompanying drawings, Figure 1 is a sectional view onthe line 1 l of Fig. 2, and Fig. 2 is a sectional view on the line 2 2 of Fig. 1. a

My impr ved valve as illustrated in the drawings mbodies substantially the same principle and general construction as described'in my former patent, but. involvesv improvements in the details of construction which make its action more perfect and sensitive. 1 Referring to the drawings, in which like letters of reference designate corresponding parts in the several figures, the valve-casing comprises an upper section A, a cap a, and a lower section Bfthese partshaving screwthreaded connections. The diaphragm C is soldered to the upper section or otherwise securely held inplace between the upper and lower sections of the valve-casing, and the space above the diaphragm within the upper section of the valve-casing constitutes a pressure-chamber W, out of which leads the discharge-duct F. The inlet-nozzle E is connected with a "suitable source of supply and has a contracted duct J which opens into a 4 small chamber D. A valve-nozzle Q'is screwed into the upper end of this'chamber and has its upperend arranged within the I valve-chamber K, formed by the box 0,which is supported on the diaphragm fram'e'P and.

carries the valve N, which is securely held in place by the screw-threaded collar The lower end of the diaphragm-frame isprovided with 'a T-shaped projection 19, which. is arranged in a mortise m in the plug M, thus forming a T-shaped mortise-and-tenon connection between the plug and the diaphragmframe, these parts being fitted'together loosely to permit a freedom of movement and prevent binding. The diaphragm is preferably soldered to the plug, which is provided with a threaded stud a", projecting through an opening at the center of the diaphragm to receive a collar S, provided with a flange s, which plug. ing against the plug and ispressed bya spring R, which is provided with an adjusting-screw device '1, extending through the lower end of the valve-casing. j The box 0 is provided with an outwardlyextending flange 0, which 'restsupon and is. fastened securely to the flange V surrounding the upper end of the diaphragm-frame, and: this box extends down within the frame and is provided witha screw-threaded collar clamps the'diaphragm tightly against the A swivel-plate R has a pointed bear- 75.

'0, which holds in place a packing-ring o', 'surrounding the valve-nozzle Q, to make a tight connection between thebox and valve no'zzle and prevent the escape of gas from the, valvechamber K to the diaphragm-chamber exceptthrough the injector-pipe L, which-has screw-threaded connection with the box and discharges the gas from the valve-chamber K into the dischargeduct F. The valve is guided in its movement by a stem- X on the upper end of the box 0, which works. in a socket win the cap a of the valve-casing, andalso by a stem You the inlet-nozzleE and fitting in a socket y in the plug p on the lower end of the diaphragm-frame, whereby ice the valve, the box inclosing the valve-cham-:.

her, and the diaphragm-frame will be guided at both the top and bottom, and in this way a proper operation of thevalve and'valve-chamher on the valve-nozzle willbe more certainly secured. 'lhe inlet-nozzle is provided with a shoulder Z, which forms a fixed stop at the bottom of the diaphragm-frame for limiting its movement, and thus limits the action of the diaphragm and protects it against injury.

- A' pressure-regulating valve constructed. as herein shown and described will greatly increase the flow of gas at low or high pressure, and this result is effected Without freezing at high pressure and without causing the diaphragm to vibrate in a manner common in other pressure-regulatingvalves of the prior art. The gas admitted through the inletnozzle and valve-nozzle will pass from the valve-chamber through the inj ector-pipe into the discharge duct, As the injector -pipe leads directly from the valvechamber to the discharge-duct, it is apparent that the gas will travel at the speed due to the pressure in the chamber and not at the speed due to the pressure on the diaphragm, as has been customary with other valves, and as the pressure in this valve-chamber is greater than the pressure in the diaphragm-chamber a much greater quantity of gas will flow through the discharge-duct and at greater speed. At high pressure the same result is aceomplished and freezing is avoided by reason of the fact that the pressure of the gas ispartly reduced by expansion in the valve-chamber before reaching the carbonatin g machine or fountain, and this preliminary expansion will thus avoid the extreme reduction of pressure at the dis charge, which ordinarily produces more or less freezing in the regulating-valvef The diaphragm is extremely sensitive and made to operate with great'del-icacy of movement by reason of the fact that the gas is prevented from escaping to the diaphragm chamber from the valve-chamber, and the connection between thevalve and thediaphragmis of such a character that binding or imperfect opera tion of the parts is entirely avoided. I When the valve is opened and the gas rushes forward through the injector-pipe into the dischargeiuct, itwill create a siphon action and reduce the pressure within the diaphragm-chamber, thereby permitting the spring to expand and holding the valve steadil at the extreme limit of its upward movement nd without vibrating. .By'thus opening the valve to its full extent and holding it'steadily in this position a much greater quantity of gas is permitted to flow than is possible with those valves of the prior art which depend entirely upon the presfreely and easily-in a proper manner. The leather'paeking on the valve-nozzle effectu ally prevents the escape of gas from the valvechamber to the diaphragm-chamber and also insures a proper movement of the box on this nozzle.

Heretofore the movement of the diaphragm and valve has generally been limited by a stop on the cap of the casing or some other removable part,- and it has been found that the adjustment is constantly changing by reason of the fact that the threaded cohnection between the cap and easing will wear and permit a different adjustment of the cap almost every time it is removed. Besides, with such con- 'struction itis always necessary to release the phragm, and this fixed'stop is not at all affected byremovingthe cap or other parts of the casing and is not changed by wearing of the threaded connections or other imperfections in fit. It will also be observed that it is not necessary to loosen the spring R before removing the cap (1, because the stop at all times limits the movement of the diaphragm and will prevent injury thereto.

-I prefer to use both a top and bottom guide for the valve, but the bottom guide may be dispensed with, if desired, and only the top guide employed.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

. 1. In a pressure-regulating valve, the combination with a casing having an inlet-nozzle and an outlet-duct, of a spring-controlled diaphragm, a frame connected with the diaphragm and carrying a valve for said inletnozzle, the upper endv of said frame being guided in the casing and the lower end thereof being guided on the inlet-nozzle. k T 2. In a pressure-regulating valve, the combination with a casing having an inlet-nozzle and an outlet-duct,of a spring-controlled diaphragm, a frame connected with the diaphragm and carrying a valve for said inletnozzle, a stem at the top of the frame guided in a socket in the cap of the casing, and a socket at the bottom'of the frame to receive a stem on the inlet-nozzle.

In a pressure-regulating valve, the combination with a casing having an inlet-nozzle and an outlet duct, of a valvenozzle conneeted with the inletnozzle, a springcontrolled diaphragm, a frame carrying a valve for said valve-nozzle and connected with said diaphragm, a fixed stop on the inlet-nozzle,

- trolled diapl1ragm,. a frame carrying a valve for said valve-nozzle'and loosely Connected with said diaphragm, said frame being guided in its movement on the valve-nozzle,in the top of the casing and on the inlet-nozzle. 5. In a pressure-regulating valve, the combination with a casinghaving an inlet-nozzle and an outlet-duct, of a valve -nozzle connected with the inlet-nozzle, a spring-controlled diaphragm, a frame carrying a valve for said valve-nozzle, and a plug fastened to the diaphragm and loosely connected with said frame. I

6. In a pressure-regulating valve, the combination with a casing having aninlet-nozzle and an outlet-duct, of a valve-nozzle con-' 1 nected with the in1et-nozzle, a spring-controlled diaphragm, a frame carrying a valve for said valve-nozzle, and a plug having a mortise-and-tenon connection with said frame.

7. 'In a pressure-regulating valve, the combination with a casing having an inlet-nozzle between said frame and said plug on the up and -an outletduct, of a valve nozzle con- 3.0

nected with'the inlet-nozzle, a diaphragm-,a

frame'carrying a valve for said valve-nozzle,

a plug fastened to the diaphragm and extend:

ing onboth sides thereof, a loose connection.

per side of the: diaphragm, and a spring for acting on the diaphragm and having a swivel connectiomwith the plug on the lower side thereof. I

, 8. In apressure-regulating valve,'the combinationwith a casing having an inlet-nozzle al1d an outletduct, of'a-valve-nozzle connected with the inletnozzle, a spring-controlled diaphragm, a frame, loosely connected v with said diaphragm and guided at the bottom on the inlet-nozzle, a box connected with the upper end of said'frame and guided in the cap of the cas ing'said box carrying a valve for. the valve nozzle and inclosing a'valve-, 5

chamber and .liaving a discharge from said chamber, a--'packing-ring around the valve-- nozzle alnda collar carried by the box around the valve-nozzle and securing the packing in place. a 1 g -CHARLES L. BASTIAN, Witnessesa i WM. ,0. BELT,

AD. BERWARTZ. 

